A rare specimen of the extinct subspecies of the New Caledonian Night-Heron Nycticorax caledonicus crassirostris. This subspecies once lived on the Bonin Islands. This subspecies became extinct in 1889, just 50 years after its first discovery. Causes for its extinction are probably introduced cats. Stuffed specimen exhibited at the Natural History museum of St. Petersburg, Russia. This Museum hosts 4 of the 6 remaining specimens.